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(No Model.)

f No; 274,937.

F.\B. HANSYON. PUMP.

Patented Apr. 3,1883.`

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.i UNITED "STATES PATENT OFFICE FRANK B. HANSON, OF NEW YORK, N. Y.

PUMP.

SPECIFICATION forming part of Letters Patent No. 274,937, dated April 3, 1883.

Application filed February 13, 1882. (No model.) l

. To all whom it may concern Be it known that I, FRANK B. lHANSoN, of the city of New York, in the county and State of New York', have invented certain new and 'useful Improvements in Pumps, ot' which the following is a specification. Y

My invention relates, principally, to handpumps employed for household use. y

The invention consists in the combination, with a'n upright pump-cylinder, of a'novel arrangement of valve-chests, suction and discharge chests, and ports orv passages, hereinafter particularly described and claimed. y

The invention also consists in the combination, with the piston ot' a pump, ot an arm for working the same, and a rock-shaft upon which said arm is secured in a novel manner, hereinafter described.

In the accompanying drawings,Figure l'represents a central vertical section of a pump embodying my invention. Fig. 2 represents a sectional View ot' the valvechest and appurtenances on the dotted line a: w, Fig. l, and a side view of the pump-cylinder; and Fig. 3 represents an irregular horizontal section on the dotted line y y, Fig. l, the arm upon the rock-shaft being shown in a different position fromthat shown in Fig. 1.

Similar letters of reference designate corresponding parts in all the figures. p

A designates an upright cylinder, closed at the bottom by a ange or base piece, A', and B designates a piston tting therein. This piston may be of any desirable construction, but as here shown is composed of a cast-metal `body having cup -leather packings a itting thereon.

O C designate the two valve-chests, which are shown as formed side by side in a direction transverse lto thelength ot' the cylinder, and

in a single casting separated by a partition, 1),.

and provided with a flange, c, through which bolts d are inserted for securing it to the side of the cylinder. lhevalve-chestsG C are provided with suction-valves e e and dischargevalvesff, and tothe under and upper sides thereof are bolted the suction-chest D and the dischargechest E, with which the suction and discharge pipes respectively communicate. The valve-chest U communicates with the lower I end ofthe cylinder A through a port or passage, F, and the chest C( communicates with the upper end of the cylinder through a port or passage, F. The two ports F and F' are straight for the greater part ot' their length; but as `they approach the valve-chests they are inclined,4 the former to the right and the latter to the left hand, as clearly shown by dotted lines in Fig. 2.

The cylinder A is surmounted by a casing, Gr, which contains the mechanism for working the piston B, and which is closed by a removable bonnet or cover, G.

` The mechanism for working the piston used in connection with the arrangement of valves here shown 4might be of vany suitable character; but that here represented consists of a rock-shaft, H, an arm, I, fixed thereon, and a rod, J, connecting said arm with the piston Bf The rock-shaft H is round for the greater part Vot' its length, andhis mounted in bearings g,

formed on opposite sides of the casing G. One ot' these bearings is closed by a plug, g', and in the other bearing is a stuffing-bong?. The eye I of the arm I is large enough to permit of the insertion ofthe shaft through'it, and in one side oi"` the said eye is an angular formation or seat, h, which tits a corresponding formation on the shaft H. After the shaft is inserted through the eye I it is forced into the seat 7L by a set-screw, i, o r other means, and thereby the arm is locked fast to the shaft., so as to oscillate therewith. This'method of connecting the arm and rockshaft is very desira' .ble, because ot' its security, and because they can be so readily disconnected, if necessary, all that is required being to loosen the set-screw i and draw the shaft out longitudinally.

The operation of the pump is as follows: When the pistou B is moved downward, the water below it is forced upward through the passage F into the valvechest C, and thence through the discharge-valve finto the4 discharge-chest E, and at the same time a suction is produced above the piston, and the wap ter passesl'rom the suction-chest D through the suction-valve e' into the valve-chest G', and from thence through the passage F into the cylinder above the piston. When the piston is moved upward, the water above it is forced IDO or passages, F F', leading from the two ends otl the cylinder, one to each chest, and inclining in opposite directions as they approach said chests, and suction and discharge chests D E, attached below and above said valvechests, substantially as specified.

2. The combination, with a pump-piston and 2o an arm for working the same, provided with an eye, in one side of which is an angular seat, of' a rock-shaft inserted through said eye, and having on one side au angular formation titting said seat, and means for securing the shaft z' 5 therein, substantially as specified.

3. The combination, with the arm I and its eye I', having the seat h, of the round shaft H, having au angular formation on one side between its ends and the set-screw i, substan- 3o tially as specified.

FRANK B. HANSON.

Witnesses:

T. J. KEANE, JAMES R. BOWEN. 

